关于stm32f105的can1无法发出报文

只看该作者 · 2014-12-10 16:05

can2可以发出，can1不可以

只看该作者 · 2014-12-10 16:09

#include "can.h"

extern CanTxMsg TxMessage;

static void Init_RxMes(CanRxMsg *RxMessage)
{
  uint8_t i = 0;

  RxMessage->StdId = 0x00;
  RxMessage->ExtId = 0x00;
  RxMessage->IDE = CAN_ID_STD;
  RxMessage->DLC = 0;
  RxMessage->FMI = 0;
  for (i = 0; i < 8; i++)
  {
RxMessage->Data[i] = 0x00;
  }
}
/*
* 函数名：CAN_GPIO_Config
* 描述  ：CAN的GPIO 配置,PB8上拉输入，PB9推挽输出
* 输入  ：无
* 输出  : 无
* 调用  ：内部调用
*/
static void CAN_GPIO_Config(void)
{
GPIO_InitTypeDef GPIO_InitStructure;

    /*外设时钟设置*/
/* GPIOB, GPIOD and AFIO clocks enable */
  RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO | RCC_APB2Periph_GPIOD | RCC_APB2Periph_GPIOB, ENABLE);

  /* CAN1 and CAN2 Periph clocks enable */
  RCC_APB1PeriphClockCmd(RCC_APB1Periph_CAN1 | RCC_APB1Periph_CAN2, ENABLE);
// /* Remap CAN1 and CAN2 GPIOs */

/* Configure CAN1 RX pin */
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;
  GPIO_Init(GPIOB, &GPIO_InitStructure);

  /* Configure CAN2 RX pin */
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5;
  GPIO_Init(GPIOB, &GPIO_InitStructure);

  /* Configure CAN1 TX pin */
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
  GPIO_Init(GPIOB, &GPIO_InitStructure);

  /* Configure CAN2 TX pin */
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6;
  GPIO_Init(GPIOB, &GPIO_InitStructure);

GPIO_PinRemapConfig(GPIO_Remap2_CAN1 , ENABLE);
  GPIO_PinRemapConfig(GPIO_Remap_CAN2, ENABLE);

}

/*
* 函数名：CAN_NVIC_Config
* 描述  ：CAN的NVIC 配置,第1优先级组，0，0优先级
* 输入  ：无
* 输出  : 无
* 调用  ：内部调用
*/
//static void CAN_NVIC_Config(void)
//{
//    NVIC_InitTypeDef NVIC_InitStructure;
// /* Configure one bit for preemption priority */
// NVIC_PriorityGroupConfig(NVIC_PriorityGroup_1);
//      /*中断设置*/
//// NVIC_InitStructure.NVIC_IRQChannel = USB_LP_CAN1_RX0_IRQn;    //CAN1 RX0中断
// NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;    //抢占优先级0
// NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;    //子优先级为0
// NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
// NVIC_Init(&NVIC_InitStructure);
//}

/*
* 函数名：CAN_Mode_Config
* 描述  ：CAN的模式配置
* 输入  ：无
* 输出  : 无
* 调用  ：内部调用
*/
static void CAN_Mode_Config(void)
{
   CAN_InitTypeDef       CAN_InitStructure;
     /************************CAN通信参数设置**********************************/
/*CAN寄存器初始化*/
CAN_DeInit(CAN1);
  CAN_DeInit(CAN2);
  CAN_StructInit(&CAN_InitStructure);
  CAN_InitStructure.CAN_TTCM = DISABLE;                /*失能时间触发通信模式*/
  CAN_InitStructure.CAN_ABOM = DISABLE;             /*失能自动离线管理*/
  CAN_InitStructure.CAN_AWUM = DISABLE;             /*失能自动唤醒模式*/
  CAN_InitStructure.CAN_NART = DISABLE;       /*失能非自动重传模式*/
  CAN_InitStructure.CAN_RFLM = DISABLE;       /*失能接收FIFO锁定模式*/
  CAN_InitStructure.CAN_TXFP = DISABLE;       /*失能发送FIFO*/
  CAN_InitStructure.CAN_Mode = CAN_Mode_Normal;    /*工作在正常模式*/

  CAN_InitStructure.CAN_SJW = CAN_SJW_1tq;
  CAN_InitStructure.CAN_BS1 = CAN_BS1_3tq;
  CAN_InitStructure.CAN_BS2 = CAN_BS2_5tq;
  CAN_InitStructure.CAN_Prescaler = 4;
  CAN_Init(CAN1, &CAN_InitStructure);
  CAN_Init(CAN2, &CAN_InitStructure);
}

/*
* 函数名：CAN_Filter_Config
* 描述  ：CAN的过滤器配置
* 输入  ：无
* 输出  : 无
* 调用  ：内部调用
*/
static void CAN_Filter_Config(void)
{
CAN_FilterInitTypeDef  CAN_FilterInitStructure;

/* CAN1滤波器初始化*/
  CAN_FilterInitStructure.CAN_FilterNumber = 0;
  CAN_FilterInitStructure.CAN_FilterMode = CAN_FilterMode_IdMask;
  CAN_FilterInitStructure.CAN_FilterScale = CAN_FilterScale_32bit;
  CAN_FilterInitStructure.CAN_FilterIdHigh = 0x0000;
  CAN_FilterInitStructure.CAN_FilterIdLow = 0x0000;
  CAN_FilterInitStructure.CAN_FilterMaskIdHigh = 0x0000;
  CAN_FilterInitStructure.CAN_FilterMaskIdLow = 0x0000;
  CAN_FilterInitStructure.CAN_FilterFIFOAssignment = 0;
  CAN_FilterInitStructure.CAN_FilterActivation = ENABLE;
  CAN_FilterInit(&CAN_FilterInitStructure);

  /* CAN2滤波器初始化*/
  CAN_FilterInitStructure.CAN_FilterNumber = 14;
  CAN_FilterInit(&CAN_FilterInitStructure);
// /*CAN通信中断使能*/
// CAN_ITConfig(CAN1, CAN_IT_FMP0, ENABLE);
CAN_ITConfig(CAN1, CAN_IT_FMP0, ENABLE);
  CAN_ITConfig(CAN2, CAN_IT_FMP0, ENABLE);
}

/*
* 函数名：CAN_Config
* 描述  ：完整配置CAN的功能
* 输入  ：无
* 输出  : 无
* 调用  ：外部调用
*/
void CAN_Config(void)
{

  CAN_GPIO_Config();
//  CAN_NVIC_Config();

  CAN_Mode_Config();
  CAN_Filter_Config();

}

/*
* 函数名：CAN_SetMsg
* 描述  ：CAN通信报文内容设置
* 输入  ：无
* 输出  : 无
* 调用  ：外部调用
*/
void CAN_SetMsg(void)
{
TxMessage.StdId = 0x321;       /*设定标准标识符*/
  TxMessage.ExtId = 0x01;       /*设定扩展标识符*/
  TxMessage.RTR = CAN_RTR_DATA;    /*数据帧*/
  TxMessage.IDE = CAN_ID_STD;    /*使用标准标识符*/
  TxMessage.DLC = 1;    /*待传输消息的帧长度*/
}
/**************************END OF FILE************************************/